Abstract:
The invention relates to a multi-layer body (1) comprising a first layer (13) having a multiplicity of first zones (21), which are respectively separated from one another by one or a plurality of transparent second zones (22). The multi-layer body has a second layer (14) composed of a transparent material, said second layer being arranged below the first layer (13), and a reflection layer (15) arranged below the second layer (14). The second layer (14) has a multiplicity of third zones (23), in each of which a microstructure (17) is impressed into the interface—facing away from the first layer—between the second layer (14) and the reflection layer, which is covered with the reflection layer (15). Each of the microstructures (17) is configured such that it reflects back and/or diffracts back light incident perpendicularly with respect to the plane spanned by the first layer from the direction of the first layer in the region of the respective third zone (23) onto a region of the first layer whose area is smaller than the area of the respective third zone (23) by at least a factor of 10. The microstructures (17) are arranged in accordance with a microstructure grid having a distance between adjacent microstructures in a second spatial direction of less than 300 μm.
Abstract:
Described is a transfer film, in particular a hot embossing film, which includes a carrier film (22) and a transfer layer portion having a structure layer (14), the transfer layer portion being arranged on the carrier film (22) and being detachable from the carrier film (22). It is provided that the carrier film (22) has a master relief structure (22m) on its side towards the structure layer (14), the structure layer (14) on its side towards the carrier film (22) has a first relief structure (14o) complementary to the master relief structure (22m) of the carrier film (22), the structure layer (14) on its side remote from the carrier film (22) has a second relief structure (14u) which differs from the first relief structure (14o), and the second relief structure (14u) is covered at least region-wise with a reflection layer (16). There are further provided a process for the production of the transfer film, a multi-layer body formed with the structure layer and a security document having the multi-layer body.
Abstract:
Described is a multilayer body for representing microimages provided with gray value gradations or color gradations. The multilayer body has a transparent first layer in which a plurality of microlenses are shaped, and a second layer (61) which is arranged beneath the first layer and has a plurality of microimages. The microlenses are arranged in accordance with a microlens raster. The second layer has a plurality of microimage regions (61b) arranged in accordance with a microimage region raster whose raster width is
Abstract:
The invention concerns a film having at least one electrical component and a process for the production of such a film. An adhesive layer comprising a radiation-cross-linkable adhesive is applied to a base film. The adhesive layer is applied to the base film in a form of being structured in pattern form and/or is irradiated in pattern form in such a way that the adhesive layer hardens with structuring in pattern form. A transfer film which comprises a carrier film and an electrical functional layer is applied to the adhesive layer. The carrier film is pulled off the film body comprising the base film, the adhesive layer and the electrical functional layer, wherein in a first region structured in pattern form the electrical functional layer remains on the base film and in a second region structured in pattern form the electrical functional layer remains on the carrier film and is pulled off the base film with the carrier film.
Abstract:
Described are various processes for the production of multi-layer bodies having at least one partially shaped functional layer and at least one further partially shaped layer and the multi-layer bodies produced in that way. The multi-layer body has at least one partially shaped functional layer in register relationship with at least one further partially shaped layer, which preferably supplement each other to provide a geometric, alphanumeric, pictorial, graphic or figurative colored representation.
Abstract:
Described is a transfer film, in particular a hot embossing film, which includes a carrier film (22) and a transfer layer portion having a structure layer (14), the transfer layer portion being arranged on the carrier film (22) and being detachable from the carrier film (22). It is provided that the carrier film (22) has a master relief structure (22m) on its side towards the structure layer (14), the structure layer (14) on its side towards the carrier film (22) has a first relief structure (14o) complementary to the master relief structure (22m) of the carrier film (22), the structure layer (14) on its side remote from the carrier film (22) has a second relief structure (14u) which differs from the first relief structure (14o), and the second relief structure (14u) is covered at least region-wise with a reflection layer (16). There are further provided a process for the production of the transfer film, a multi-layer body formed with the structure layer and a security document having the multi-layer body.
Abstract:
The invention concerns a security element (1) and a value-bearing document safeguarded by such a security element. The security element (1) includes a strip-form multi-layer body (10) with a carrier film (11) and at least one decorative layer (12), as well as a first and a second adhesive layer (14, 15). The first adhesive layer (14) is provided on a first surface of the multi-layer body (10). The second adhesive layer (15) is provided on an opposite second surface of the multi-layer body. The security element has two or more first regions (21) in which the first adhesive layer (14) respectively covers the first surface of the multi-layer body and two or more second regions (22) in which the second but not the first surface of the multi-layer body is respectively covered by the second and the first adhesive layer respectively and in which a surface structure is respectively formed in the first surface. First and second regions (21, 22) are in this case arranged in mutually juxtaposed adjacent relationship.
Abstract:
A binder mixture containing lignin or lignins with reactive groups and phenol-novolac in a weight ratio of 95:5 to 50:50 useful for the production of non-woven fabrics and wood fiber materials.
Abstract:
An aqueous resol solution produced by an alkaline condensation of a phenolic compound with an aldehyde in a molar ratio of 1:1.5 to 2.5 with an alkali metal content of 1 to 5.0% by weight of the reaction solution, neutralizing the solution after the end of condensation at least partially with an aromatic hydroxy carboxylic acid at a temperature not greater than 50.degree. C. and then concentrating the reaction mixture which is readily dilutable with water.
Abstract:
A binding agent for molded bodies and molding compositions produced by prereacting a mixture of 5 to 60% by weight of lignin or a lignin fraction produced by the Organosolv process and 40 to 95% by weight of a phenol novolac resin and subjecting the latter to high shear forces in a kneader or extruder and optionally mixing the same with a curing agent useful in molding compositions and high temperature-stable molded products such as refractory products, friction coatings, textile fleeces and carbon or graphite materials.